The answer is essentially hardware-level dependency injection. Before calling LD_DESCRIPTOR, the caller saves its desired test constant into a hardware latch using a micro-op called PTSAV (Protection Save). Within LD_DESCRIPTOR, another micro-op called PTOVRR (Protection Override) retrieves and fires the saved test.
Why is this a problem?
Последние новости。关于这个话题，旺商聊官方下载提供了深入分析
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用。搜狗输入法下载对此有专业解读
第一节 扰乱公共秩序的行为和处罚。同城约会对此有专业解读
圖像來源，BBC Chinese / Lok Lee